RZA from Wu-Tang Clan -- Father's Day at Juvenile Hall

RZA from the Wu-Tang Clan is going to jail ... but not because he's in trouble -- in fact, RZA is going to help.

TMZ has learned ... the rapper is working with the L.A. County Probation Dept. to host a Father's Day workshop at L.A. Juvenile Hall on Saturday.

According to the L.A. County Probation Dept., RZA's goal is to help "educate the young men about their roles, responsibilities and expectations as fathers upon their release from juvenile hall."

Among the activities, RZA will teach the inmates how to change diapers, dress a baby and properly care for a child.